package socket;

import java.io.*;
import java.net.ServerSocket;
import java.net.Socket;

/**
 * Created with IntelliJ IDEA.
 * User: leep
 * Date: 16-2-18
 * Time: 下午1:30
 * To change this template use File | Settings | File Templates.
 */
public class Service {
	public static final int PORT = 12345;//监听的端口号

	public static void main(String arg[]) throws IOException {
		System.out.println("服务器启动...\n");
		Service server = new Service();
		server.init();
	}

	private void init() {

		try {
			ServerSocket serverSocket = new ServerSocket(PORT);
			while (true) {
				// 一旦有堵塞, 则表示服务器与客户端获得了连接
				Socket client = serverSocket.accept();
				// 处理这次连接
				new HandlerThread(client);
			}
		} catch (Exception e) {
			System.out.println("服务器异常: " + e.getMessage());
		}
	}

	private class HandlerThread implements Runnable {
		private Socket socket;

		public HandlerThread(Socket client) {
			socket = client;
			new Thread(this).start();
		}

		@Override
		public void run() {
			try {
				// 读取客户端数据
				DataInputStream input = new DataInputStream(socket.getInputStream());
				String clientInputStr = input.readUTF();//这里要注意和客户端输出流的写方法对应,否则会抛 EOFException
				// 处理客户端数据
				System.out.println("客户端发过来的内容:" + clientInputStr);

				// 向客户端回复信息
				DataOutputStream out = new DataOutputStream(socket.getOutputStream());
				System.out.print("请输入:\t");
				// 发送键盘输入的一行
				String s = new BufferedReader(new InputStreamReader(System.in)).readLine();
				out.writeUTF(s);

				out.close();
				input.close();
			} catch (Exception e) {
				System.out.println("服务器 run 异常: " + e.getMessage());
			} finally {
				if (socket != null) {
					try {
						socket.close();
					} catch (Exception e) {
						socket = null;
						System.out.println("服务端 finally 异常:" + e.getMessage());
					}
				}
			}
		}
	}
}
